/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
*
- * Use of this software is governed by the GNU LGPLv2.1 license
+ * Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
*/
#include <isl_ctx_private.h>
+#include <isl_map_private.h>
#include <isl/space.h>
#include <isl/seq.h>
#include <isl_mat_private.h>
-#include "isl_map_private.h"
#include <isl_space_private.h>
isl_ctx *isl_mat_get_ctx(__isl_keep isl_mat *mat)
return mat2;
}
-void isl_mat_free(struct isl_mat *mat)
+void *isl_mat_free(struct isl_mat *mat)
{
if (!mat)
- return;
+ return NULL;
if (--mat->ref > 0)
- return;
+ return NULL;
if (!ISL_F_ISSET(mat, ISL_MAT_BORROWED))
isl_blk_free(mat->ctx, mat->block);
isl_ctx_deref(mat->ctx);
free(mat->row);
free(mat);
+
+ return NULL;
}
int isl_mat_rows(__isl_keep isl_mat *mat)
return NULL;
}
-struct isl_mat *isl_mat_identity(struct isl_ctx *ctx, unsigned n_row)
+__isl_give isl_mat *isl_mat_diag(isl_ctx *ctx, unsigned n_row, isl_int d)
{
int i;
struct isl_mat *mat;
return NULL;
for (i = 0; i < n_row; ++i) {
isl_seq_clr(mat->row[i], i);
- isl_int_set_si(mat->row[i][i], 1);
+ isl_int_set(mat->row[i][i], d);
isl_seq_clr(mat->row[i]+i+1, n_row-(i+1));
}
return mat;
}
+__isl_give isl_mat *isl_mat_identity(isl_ctx *ctx, unsigned n_row)
+{
+ if (!ctx)
+ return NULL;
+ return isl_mat_diag(ctx, n_row, ctx->one);
+}
+
struct isl_vec *isl_mat_vec_product(struct isl_mat *mat, struct isl_vec *vec)
{
int i;
struct isl_mat *transpose = NULL;
int i, j;
+ if (!mat)
+ return NULL;
+
if (mat->n_col == mat->n_row) {
mat = isl_mat_cow(mat);
if (!mat)
return mat;
}
-struct isl_mat *isl_mat_product(struct isl_mat *left, struct isl_mat *right)
+__isl_give isl_mat *isl_mat_product(__isl_take isl_mat *left,
+ __isl_take isl_mat *right)
{
int i, j, k;
struct isl_mat *prod;
{
int r;
+ if (n == 0)
+ return mat;
+
mat = isl_mat_cow(mat);
if (!mat)
return NULL;
return mat;
}
+__isl_give isl_mat *isl_mat_scale_down_row(__isl_take isl_mat *mat, int row,
+ isl_int m)
+{
+ if (isl_int_is_one(m))
+ return mat;
+
+ mat = isl_mat_cow(mat);
+ if (!mat)
+ return NULL;
+
+ isl_seq_scale_down(mat->row[row], mat->row[row], m, mat->n_col);
+
+ return mat;
+}
+
__isl_give isl_mat *isl_mat_normalize(__isl_take isl_mat *mat)
{
isl_int gcd;